a. The leaves of the lotus are round, round, rounder than a mirror.
b. The thorn of the water nut is sharp, sharp, sharper than an awl.
c. When the wind blows, the down on the pussy willows floats away.
d. When the rain beats down on the pear blossoms, a butterfly flies up.
– PZI Miscellaneous Koans, Case 28 (Dahui)